<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
            <h3>@keyup.enter  键盘输入回车</h3>
            <input @keyup.enter="fn" type="text">
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
      const app = new Vue({
        el: '#app',
        data: {
         
        },
        methods: {
          fn (e) {
            console.log('我是个回车触发的事件', e);
          }
        }
      })
    </script>
</body>
</html>